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(11)

EP 2 047 339 A1

(12)

(43) Date of publication: 15.04.2009 Bulletin 2009/16 (21) Application number: 07712964.1 (22) Date of filing: 27.03.2007

(51) International Patent Classification (IPC):  G05B 19/042(2006.01) G05B 23/02(2006.01) G05B 19/418(2006.01) (86) International application number: PCT/GB2007/001110 (87) International publication number: WO 2008/012486 (31.01.2008 Gazette 2008/05)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 27.07.2006 GB 0614964 (71) Applicant: ROLLS-ROYCE PLC London, Greater London SW1E 6AT (GB)	(72) Inventors: TANNER, Graham, Francis Derbyshire DE56 4HG (GB) MILLS, Andrew Sheffield S1 3JD (GB) (74) Representative: Gill, Stephen Charles et al Mewburn Ellis LLP 33 Gutter Lane London EC2V 8AS London EC2V 8AS (GB)